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1 mark

What will come in place of the question mark (?) in the following equation if '+' means '×', '×' means '−', '−' means '÷' and '÷' means '+'?
18÷4+3×2−2=?

  1. A
    19
  2. B
    30
  3. C
    29
  4. D
    28

Solution & Step-by-step Explanation

Given sign conversions:
÷→+

+→×

×→−

−→÷

Substituting these signs into the given expression:

18+4×3−2÷2
Now, apply the BODMAS rule (Division, Multiplication, Addition, Subtraction):

Division: 2÷2=1

Expression becomes: 18+4×3−1
Multiplication: 4×3=12

Expression becomes: 18+12−1
Addition: 18+12=30

Expression becomes: 30−1
Subtraction: 30−1=29

Thus, the value is 29.

Practice this question

Try it yourself before checking the explanation above.

What will come in place of the question mark (?) in the following equation if '+' means '×', '×' means '−', '−' means '÷' and '÷' means '+'?
18÷4+3×2−2=?
A
19
B
30
C
29
D
28

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